2016-12-16 판단문제
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중간 변환 촉매는 사용 전에는 Fe3O4 형태로 존재하며, 활성을 갖기 위해서는 반드시 Fe2O3로 전환되어야 한다. 틀림
중간 변환 촉매는 사용 전에는 Fe3O4 형태로 존재하며, 활성을 갖기 위해서는 반드시 Fe2O3로 전환되어야 한다. (x)
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